﻿/* ManagedZFS (mzfs) - A Managed Implementation of the ZFS Filesystem.
Copyright (c) 2012, William 'cathode' Shelley
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER INCONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;

namespace ManagedZFS
{
    /// <summary>
    /// Defines a ZFS object.
    /// </summary>
    [StructLayout(LayoutKind.Explicit)]
    public class DNode
    {
        [FieldOffset(0)]
        private ObjectType Type;

        [FieldOffset(1)]
        private byte IndirectBlockShift;


        [FieldOffset(2)]
        private byte IndirectionLevels;

        [FieldOffset(3)]
        private byte NBlockPointer;

        [FieldOffset(4)]
        private byte BonusType;

        [FieldOffset(5)]
        private byte Checksum;

        [FieldOffset(6)]
        private byte Compress;

        // Skip byte 7 here.

        [FieldOffset(8)]
        private ushort DataBlockSize;

        [FieldOffset(10)]
        private ushort BonusLength;

        // skip bytes 12-15 here.

        [FieldOffset(16)]
        private ulong MaxBlockId;

        [FieldOffset(24)]
        private ulong SecPhys;

        [FieldOffset(32)]
        private BlockPointer Ptr1;

        [FieldOffset(160)]
        private BlockPointer Ptr2;

        [FieldOffset(288)]
        private BlockPointer Ptr3;


    }
}
